How do you make sure email you send programmatically is not automatically marked as spam? -

this tricky 1 , i've relied on techniques, such permission-based emails (i.e. sending people have permission send to) , not using blatantly spamish terminology.

of late, of emails send out programmatically have started being shuffled people's spam folder automatically , i'm wondering can it.

this despite fact these particular emails not ones humans mark spam, specifically, emails contain license keys people have paid money for, don't think they're going consider them spam

i figure big topic in ignorant simpleton.

use email authentication methods, such spf, , dkim prove emails , domain name belong together, , prevent spoofing of domain name. spf website includes wizard generate dns information site.

check reverse dns make sure ip address of mail server points domain name use sending mail.

make sure ip-address you're using not on blacklist

make sure reply-to address valid, existing address.

use full, real name of addressee in field, not email-address (e.g. "john smith" <john@blacksmiths-international.com> ).

monitor abuse accounts, such abuse@yourdomain.com , postmaster@yourdomain.com. means - make sure these accounts exist, read what's sent them, , act on complaints.

finally, make really easy unsubscribe. otherwise, users unsubscribe pressing spam button, , affect reputation.

that said, getting hotmail accept emails remains black art.